The Outer Covering of an Animal,the __________,Functions Primarily to Protect

Q15: Skeletal muscles are attached to the skeleton

Q16: The tetrapod skeleton is modified for support<br>A)on

Q17: Which of the following animals possess a

Q18: The _ is the external covering of

Q19: The functional unit of a myofibril is

Q21: The capacity to receive and respond to

Q22: The thick filaments of vertebrate skeletal muscle

Q23: What is the membrane of a muscle

Q24: What replaces the notochord in most vertebrates?<br>A)nothing<br>B)the

Q25: In the epidermis of hagfishes are _,which